Hello! I am getting array of the objects at the output. I am able to access elements of zero but unable to access member of the object. I am trying to get minvalue and maxvalue from that object. Please help me with this! [Screenshot (92)]

const agg1 = msg.payload[0].Agg1_Total_Weight const minvalue = agg1.minvalue const maxvalue = agg1.maxvalue const difference = maxvalue - minvalue return { payload: { minvalue, maxvalue, difference } } This will output a msg like: msg.payload: { minvalue: 1000, maxvalue: 2000, difference: 10…

The message does not live in msg.payload. Where does the message come from. Make sure to go through the documentation to access elements in an object/array.

[{"id":"2dbaa60.7a9125a","type":"change","z":"24076265.de751e","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"","tot":"date"}],"action":"","property":"","from":"","to":"","reg":false,"x":260,"y":320,"wires":[["7f9287a9.8549b8"]]},{"id":"a42cb46c.27e798","type":"debug","z":"24076265.de7…

Oh, sorry I just read it and did the same but It's giving me error as below Error: Cannot read properties of undefined (reading 'Agg1_Total_Weight')

You pasted your flow above, but it has the read aggregate node, which I don't have. You need to copy the message going into your function node and paste that here... Ideally with your function node code as well.

Read aggregate node's output going into function node is as below ... [{"Agg1_Total_Weight":{"firsttime":"2022-12-01T03:57:49.743Z","average":3180098.7095534313,"countuncertain":0,"maxvalue":3976252.5,"firstvalue":2368975.8,"countbad":928,"mintime":"2022-12-01T03:57:49.743Z","lastvalue":3976252.5,"…

Haha, this is actually difficult to reproduce 'cause Node-RED is doing everything it can to prevent sending a msg that is an array... That read-aggregate node is pretty messed-up... Try this: In the function node, add as first line: node.warn(msg) and then screen shot or paste what you get in the…

The other thing I have tried is as below. Output of the read aggregate node in function node and in function node written as below.. let one =msg.payload[0]; msg.payload = one; return msg; Then output of the function node in split node.Which is giving me 3 parts as below 1: {"firsttime":"2022-1…

copy from debug pane [Screenshot (99)] {"payload":[{"Agg1_Total_Weight":{"firsttime":"2022-12-01T03:57:49.743Z","average":3180098.7095534313,"countuncertain":0,"maxvalue":3976252.5,"firstvalue":2368975.8,"countbad":928,"mintime":"2022-12-01T03:57:49.743Z","lastvalue":3976252.5,"sum":48566467492.3,…

[image] Jhankhana: {"payload":[{"Agg1_Total_Weight":{"firsttime":"2022-12- In this case you have a payload... It seems you're trying so many combinations so fast that you're getting wires crossed... Just put a function node after the read aggregate value and put the node.warn from above in t…

Access the object

General

Jhankhana 28 December 2022 08:16 21

yes!!
It's working. Thank you so much!!!

Please could you explain me this same thing.

and how can I get both of them (minvalue and maxvalue) using single function. (Actually, I want to subtract so ....)

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Access the object

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